Pump.



R. MORRILL.

PUMP.

(Application led June 24, 1901.\

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UNITED STATES PATENT OFFICE.

vROLAND MORRILL, OF BENTON HARBOR, MICHIGAN.

PUMP.

SPECIFICATION formingpart of Letters Patent No. 691,652, dated January 21, 1902.

Application filed June 24,l901

To a/ZZ whom t may concern.-

Be it known that I, ROLAND MORRTLL, a citizen of the United States, residing at Benton Harbor, in the county of Berrien and State of Michigan, have invented certain new and useful Improvements in Spray-Pumps, of which the following is a specification.

The present invention relates more partie ularly to pumps of the class used for spraying liquid insecticides, but'A which may be .used for spraying water, whitewash, calcimine, paint, and other liquids. These liquids contain more or less gritty matter, and it has been a matter of some diculty to provide for the purpose described a pump that will meet all of the requirements, including cheapness, compactness, efficiency, durability, simplicity, and ready removability of the valve device for the purpose ofcleaning or repairing it.

The object of the present invention isto provide a pump that will meet all of these requirements; and to this end the invention consists in the features of novelty that are hereinafter described with reference to the accompanying drawings, which are made a part of this specification, Aand in which- Figure l is a vertical section of the lower portion of a spray-pump embodying the invention. Fig. 2 is a plan view thereof. Fig. 3 isa sectional elevation thereof, the valvecasing being shown in elevation and the hol- Figs. 4 and 5 A represents arhollow base having interna threaded annular flanges a and a', into which the lower ends of the air-chamber B and the plunger-'chamber O are screwed, respectively. The bottom of the air-chamber `is in direct open communication withtheinte'rior of the hollow base, while the bottom of the plungercylinder'is in direct opencommunication with the interior of-ahollow valve-casing D. This valve-casing is so made that it remains intact when removed from the base, (bypreference it is cast in one piece,) so that itmay be handled to put it in place with greater facility than would be possible if it were made up of a number of separate and wholly disconnected pieces. Y The hollow base has a cylindrical portion A', which projects downward and is open at bottom, and above this it has a threaded Serial No'. 65,79 9. (No model.)y

opening a", which is concentric with the axis of the port-ion A. The valve-casing has a cylindrical portion D', which ts snugly within the portion A', and .below the portion D it has a shoulder d, which is adapted to come against the bottom of the portion A and form a tight joint therewith, either with or without the use of a gasket. The valve-casing has also an inclined ceiling D and above this a contracted portion D2, which joins the ceiling at one side of the center thereof, whence it proceeds upward and is deliected inward,termi nating at top in a contracted cylindrical portion d', which is in axial alinement with the large cylindrical portion D and is adapted to enter an opening a." in the base, the portion d being externally threaded, so that when screwed into the opening a" it will form a tight jointk therewith and will draw the shoulder d firmly against the lower margin of the portion A of the base. By these means the interior of the valvefcasing is placed in direct open` communication with the interior of the plunger-cylinder, and the valve-casing isiutilize'd for the purpose of closing the bottom of` the hollow base, the valvecasing proper being contained within said base.

Through the bottom of the valve-casing is a threaded opening, into which is screwed the valve-seat E ofthe induction-valve F. This valve is provided with a stem f,which extends downward and passes through a spider e, by which it is guided, a cross-head f being provided at thelower end'of the stem for the purpose of limiting its upward movement. Projecting upward from the seat proper are uprights e', which guide the valve proper, insuring its perfect seating. 4 Through the inclined ceiling D" of the valve-casing is formed a port d", which4 opens into the hollow base and is ,controlled by a valve Gr, having a stem g, which is swiveled in a yoke H, which latter straddles the reduced portion D2 of the valve-casing and is sides of any other construction known to me. In addition to this the course which the liquid is compelled to take in first entering through theinduction-port and passingthence through the valve-casing into the plunger-cylinder, and then passing back into the the valve-casing, through the induction-port, and thence through the hollow base to the air-chamber is more direct than in any other pump of this class known to me. These things are of importance in that they reduce the friction upon the liquid and enable the production of high pressure within the air-chamber.

Another important advantage of the construction above described is that the valves are permanently associated with the casing, so that when the casingis removed the valves will not only be removed with it, but will be retained in place, so that when necessary they may be cleaned and replaced with the least possible manipulation.

The valve-casing has a depending ange or apron I, from which short legs t' project downward. This depending flange or apron is provided with an annular groove, into which is sprung the margin of a wire-gauze diaphragm J, which serves to prevent large bodies of solid matter from reaching the induction-port. For the purpose of preventing the pressure of the liquid upon the diaphragm from pressing it upward, so that it would interfere with the movement of the valve-stemf, a number of projections e extend downward from the valve-seat E.

Having thus described my invention, the

. following is what I claim as new and desire to secure by Letters Patent:

l. In a pump of the class described, the combination of a cylinder, a hollow base open at the bottom and having an opening opposite the lower end of said cylinder, a removable hollow valve-casing closing the bottom of the base and having a hollow, unvalved portion extending upward to the opening aforesaid and in direct communication with the bottom of said cylinder, said valve-casing being provided with an induction-port opening directly into it and an eduction-port opening into the hollow base, valves for controlling said ports, anda second cylinder, one of said cylinders being an air-cylinder and the other a plunger-cylinder, substantially as described.

2. In a pump of the class described, the combination of a cylinder, a hollow base open at the bottom and having an opening opposite the lower end of said cylinder, a removable hollow valve-casing formed in one piece and closing the bottom of the base, the interior of said valve-casing being in direct open communication with said cylinder,said valvecasing having a valved port communicating with the hollow base and a valved inductionport opening directly into it, a removable valve-seat surrounding said induction-port, anda second cylinder, one of said cylinders being an air-cylinder and the other a plungercylinder, substantially as described.

il. The combination of an air-chamber, a plunger-cylinder, a hollow base, open at bottom and having an opening opposite the lower end of the plunger-cylinder, and a hollow valve-casing closing the bottom of the base and having a hollow portion extending upward and communicating with the bottom of the plungercylinder through the opening aforesaid, said casing having also induction and eduction ports, the latter opening into the hollow base, and valves for controlling said ports, substantially as set forth.

l. The combination of an air-chamber, a plunger-cylinder, a hollow base having an opening opposite the bottom of the plungercylinder, and having a cylindrical portion extending downward in axial alinement with said opening, a hollow valve-casing located Within the base and closing said cylindrical portion of the base, said casing having a hollow portion extending into the opening aforesaid at the bottom of the plunger-cylinder, and having also induction and eduction ports, the latter opening into the hollow base, and valves for controlling said ports,substantially as described.

5. The combination' of an air-chamber, a plunger-cylinder, a hollow base, open at bottom and having an opening opposite the lower end of the plunger-cylinder, a hollow valvecasing located within the hollow base and closing the bottom thereof, said casing having a contracted portion extending upward and communicating with the bottom of the plunger-cylinder, said casing having also induction and eduction ports, the latter opening into the hollow base, and valves for controlling said ports, substantially as described.

il. The combination of an air-chamber, a plunger-cylinder, a hollow base, open at bottom and having an opening opposite the lower end of the plunger-cylinder, a hollow valvecasing closing the bottom of the base and having an inclined ceiling, provided with an eduction-port, opening into the hollow base, a contracted portion joining the ceiling at one side of said port and projecting upward, said contracted portion being deflected inward and communicating at its upper end with the interior of the plunger -cylinder through the opening aforesaid, said casing having also an induction-port, and valves for controlling said ports, substantially as described.

7. The combination of an air-chamber, a plunger-cylinder, a hollow base, having an opening opposite the lower end of the plungercylinder, and having a cylindrical portion projecting downward and in axial alinement with said opening, a valve-casing closing the bottom of the base and having a cylindrical lower portion located within the base, an inclined ceiling having an eduction-port opening into the base, a contracted portion join- TOO ing the ceiling at one side of the center, whence it projects upward, said contracted portion being deiiected inward and terminating at top in a cylindrical portion, in axial alinement with its cylindrical lower portion, and entering the opening aforesaid at the bottom of the plunger-cylinder, said casing having also an induction-port, and valves for controlling` said ports, substantially as described. g

S. The combination of an air-chamber, a plunger-cylinder, a hollow base in open communication with the bottom of the air-chamber, said base having a threaded opening opposite the bottom of the plunger-cylinder, and having also a cylindrical portion in axial alinement with the threaded opening aforesaid, and open at bottom, a hollow valve-casing located Within the cylindrical portion of valve, of a stem projecting downward, means for guiding said stern, a wire-gauze diaphragm arranged below the travel of said stem, and projections engagingsaid diaphragm for holding it in place, substantially as described.

ROLAND MORRILL.

Witnesses:

L. M. HOPKINS, W. D. CRoss. 

